Just use the marker and draw a line on paper, then set the tank on the line and it follows the line! Amazing is’t it? The tanks have an optical sensor that reads the black line drawn on a piece of paper. With its induction power and optical sensor feature, this Inductive Tank Toy will follow any black lines that is not too thin or too thick. Make sure the lines are visible enough or else the tank will go around in circles.

Grab Yours Now : [ Ссылка ]

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Please watch: "MagPutty : Magnetic Thinking Putty"
[ Ссылка ]
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